1485309438 has 24 divisors (see below), whose sum is σ = 3222180000. Its totient is φ = 494486304.

The previous prime is 1485309437. The next prime is 1485309457. The reversal of 1485309438 is 8349035841.

It is a super-2 number, since 2×1485309438² = 4412288253223751688, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1485309393 and 1485309402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1485309437) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36438 + ... + 65561.

It is an arithmetic number, because the mean of its divisors is an integer number (134257500).

Almost surely, 2^1485309438 is an apocalyptic number.

1485309438 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1485309438 is an abundant number, since it is smaller than the sum of its proper divisors (1736870562).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1485309438 is a wasteful number, since it uses less digits than its factorization.

1485309438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102816 (or 102813 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The square root of 1485309438 is about 38539.7124794672. The cubic root of 1485309438 is about 1140.9649770349.

The spelling of 1485309438 in words is "one billion, four hundred eighty-five million, three hundred nine thousand, four hundred thirty-eight".